H2H data updated: 2026-07-18 17:48 UTC
Ken Flach vs Lawson Duncan H2H: 1-0
Ken Flach holds a 1–0 lead over Lawson Duncan in their ATP head-to-head. Across 1 main-draw meeting, Ken Flach leads 1–0 on hard courts. Most recently, Ken Flach won the 1987 US Open first round 6-2 7-6 6-0.
Want to explore more matchups? Advanced rivalry search lets you browse current and historical rivalries, unbeaten records, or every matchup for a player.
USA
Right-Handed
185 cm / 6'1"
H2H
1
–
0
1 main draw meetings
USA
Age 61
Right-Handed
185 cm / 6'1"
H2H Match Log
| Date | Tournament | Category | Round | Surface | Winner | Score | Loser | Match |
|---|---|---|---|---|---|---|---|---|
| Sep 3, 1987* | US Open | Grand Slam | R128 | Hard | Ken Flach | 6-2 7-6 6-0 | Lawson Duncan | Match data |
* Estimated match date where the exact historical date is unavailable.
Career Comparison
| Player | Current | Peak | Pts | Elo | W | L | Win % | GS | 1000 | Finals | 500 | 250 | Titles |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Ken Flach | #815 | #56 | 130 | 1,714 | 52 | 80 | 39.4% | 0 | 0 | 0 | 0 | 0 | 0 |
| Lawson Duncan | #1,094 | #47 | 317 | 1,761 | 105 | 110 | 48.8% | 0 | 0 | 0 | 0 | 0 | 0 |
Career Progression by Age
Seasons are aligned by the age each player spent most of that calendar year. GS and Titles are cumulative career totals through that season.
| Age | Ken Flach | Lawson Duncan | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Yr | W-L | Win % | Rank | Elo | GS | Titles | Yr | W-L | Win % | Rank | Elo | GS | Titles | |
| 19 | 1982 | 0–1 | 0.0% | #438 | 1,498 | 0 | 0 | 1984 | 4–5 | 44.4% | #165 | 1,537 | 0 | 0 |
| 20 | 1983 | 2–3 | 40.0% | #314 | 1,521 | 0 | 0 | 1985 | 26–19 | 57.8% | #59 | 1,624 | 0 | 0 |
| 21 | 1984 | 7–6 | 53.8% | #155 | 1,598 | 0 | 0 | 1986 | 11–18 | 37.9% | #174 | 1,569 | 0 | 0 |
| 22 | 1985 | 12–12 | 50.0% | #60 | 1,675 | 0 | 0 | 1987 | 6–9 | 40.0% | #93 | 1,565 | 0 | 0 |
| 23 | 1986 | 4–15 | 21.1% | #223 | 1,556 | 0 | 0 | 1988 | 21–17 | 55.3% | #58 | 1,657 | 0 | 0 |
| 24 | 1987 | 10–13 | 43.5% | #100 | 1,621 | 0 | 0 | 1989 | 25–22 | 53.2% | #91 | 1,672 | 0 | 0 |
| 25 | 1988 | 7–12 | 36.8% | #203 | 1,618 | 0 | 0 | 1990 | 12–18 | 40.0% | #143 | 1,589 | 0 | 0 |
| 26 | 1989 | 6–7 | 46.2% | #194 | 1,652 | 0 | 0 | 1991 | 0–2 | 0.0% | #432 | 1,564 | 0 | 0 |
| 27 | 1990 | 3–6 | 33.3% | #222 | 1,611 | 0 | 0 | — | — | — | — | — | — | — |
| 28 | 1991 | 0–2 | 0.0% | #572 | 1,575 | 0 | 0 | — | — | — | — | — | — | — |
| 29 | 1992 | 0–1 | 0.0% | #742 | 1,558 | 0 | 0 | — | — | — | — | — | — | — |
| 31 | 1994 | 1–1 | 50.0% | #514 | 1,575 | 0 | 0 | — | — | — | — | — | — | — |
| 32 | 1995 | 0–1 | 0.0% | #835 | 1,570 | 0 | 0 | — | — | — | — | — | — | — |